Question

When a chemical reaction absorbs heat energy, the temperature of reaction mixture fall_______________and it becomes.​

Answer 1

don't no sorry.... ........

Answer 2

When a chemical reaction absorbs heat energy, the temperature of the reaction mixture falls down and it becomes cool.

Explanation:

• There are mainly two types of reactions:- Endothermic reactions and Exothermic reactions.  
• An endothermic process releases heat into the surroundings, causing the temperature of the immediate surroundings to rise.  
• An exothermic process absorbs heat during the reaction and cools the surroundings.  
• It can be explained using the example given below.  
• Consider two flasks A and B with water.  
• When two different salts, Salt A and Salt B are added to flask A and B respectively, one among them turns cold and the other turned hot.
• Here Salt A is ammonium nitrate ( NH₄NO₃ ) and salt B is Calcium chloride ( CaCl₂ )
• When ammonium nitrate is mixed in water, the system absorbed heat from the surrounding, the flask and thus the flask felt cold.
• When calcium chloride is mixed in water, the system released heat into the surroundings, the flask, and thus the flask felt hot.